update： unipush测试例

pages/API/uni-push/uni-push.uvue

@@ -33,7 +33,7 @@
 
   const handleCreateChannel = (showToast: boolean) => {
     // #ifdef APP-ANDROID
-    const manager = uni.getChannelManager()
+    const manager = uni.getPushChannelManager()
     manager.setPushChannel({
       channelId: "msg-pass",
       channelDesc: "留言审核通过",
@@ -47,7 +47,7 @@
   }
   const handleGetAllChannels = () => {
     // #ifdef APP-ANDROID
-    const manager = uni.getChannelManager()
+    const manager = uni.getPushChannelManager()
     console.log("channels : " + manager.getAllChannels());
     channelInfo.value = `渠道信息为: \n ${manager.getAllChannels()}`
     // #endif